Sideboard component



FIG. 1 is a front elevational view of a sideboard component showing my new design;

FIG. 2 is a right-side elevational view thereof, with the left-side elevational view being a mirror image of FIG. 2;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines shown in the figures are for illustrative purposes only and form no part of the claimed sideboard component design. 

The ornamental design for a sideboard component, as shown and described. 